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2013 Honda CRV Help Needed
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fastsvo
Novice
Jun 24, 2024, 2:13 PM
Post #1 of 4
(174 views)
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2013 Honda CRV Help Needed
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For the first time, I hooked up a set of gauges to my vehicle and would like to review the results with this group here.
Be patient, I am still learning, but always enjoy a good challenge and value the "eye of experience" from others.
The Car: 2013 Honda CRV with 118k miles.
Condition: AC not cold enough...sometimes it surprises me with colder operation, but for the most part it struggles to cool at very high ambient temps.
Cause: ?? (low on freon it seems... based on the data below).
Correction: Hopefully just recharge it.
So, I have compiled a google drive consisting of walk around videos plus photos. One observation, is that I believe the valve core on the low side, might be leaking, since after pulling the gauge set off, I noticed a touch of oil (?) on the inside of the VC....basically on the face of the brass.
Initial Walk Around Video:
https://drive.google.com/file/d/1xEIatAvgaZtHVaReJAaJh1nFiV7-KSZR/view?usp=sharing
The Valve Cores:
https://drive.google.com/file/d/1_bOuoBorOSGCAjiC_RajP4qn0cV2NIhr/view?usp=drive_link
Full Folder:
https://drive.google.com/drive/folders/1A0BBxcrNN2091XFuIQVeiK6A6dQzQ2J2?usp=sharing
Looking at the PT Chart I found online, it seems I am just low on refrigerant. It was around 94* degrees ambient at the time.
Thanks in advance for any and all help!
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 24, 2024, 5:06 PM
Post #2 of 4
(167 views)
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Re: 2013 Honda CRV Help Needed
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Ok, the first thing you need to understand is that AC repair is generally not a DIY job. It looks simple and many people think it is but it requires a lot of understanding of how refrigeration works and a lot of experience and observation.
You also need to understand the principles behind auto AC. These systems are not designed to give you a specific temp all the time. They are designed to bring the outside temp down about 30 degrees.
That being said you are never going to see cold air with those pressures. They can indicate 2 different conditions.
Low refrigerant
poor refrigerant circulation due to a restriction.
This is why ALL AC diagnosis should start with a complete evacuate and recharge with an exact weighed charge because without knowing the EXACT amount of charge, the pressures don't mean much at all. If you had pressures like that after a recharge, then you would look for the restriction. Your situation could go either way.
I live in South Florida and specialize in AC repair and no matter what anyone tells you, you CANNOT recharge a system by pressure accurately. Not enough is a problem, too much is a problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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fastsvo
Novice
Jun 27, 2024, 12:15 PM
Post #3 of 4
(73 views)
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Re: 2013 Honda CRV Help Needed
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I understand and appreciate the preference of charging by weight vs. psi alone.
Would this potentially point towards a restriction....
when driving with the temp probe in the vent...on a 95* degree day, I am getting near 70* out of the vents in city driving, but when on the highway, the number drops to 60*. I know that more air is passing over the condenser at speed, but should it make this much of a difference in temperature readings? What could it possibly point to?
Additionally, this morning it was 74* and after arriving at my location, with the fan speed on a low setting, the temperature out of the vent was in the mid 40's. If it's this low on refrigerant, should it be able to get that low, even though the solar load isn't anywhere near its peak yet?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 27, 2024, 12:34 PM
Post #4 of 4
(70 views)
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Re: 2013 Honda CRV Help Needed
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It's not a preference. It's mandatory to understand what the refrigerant is doing.
There are many factors that contribute to your findings. The fact that you are cruising at higher RPM with more air flow over the condenser will lead to cooler air. You are also recooling already cooled air so it will ultimately get cooler eventually.
You can't diagnose a restriction unless it has the correct amount of refrigerant in it. All factors revolve around having the correct charge.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jun 28, 2024, 1:54 PM)
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